I agree with what Jim (JD338) says above. If you ever plan to hunt in the west, the 300 Win. Maq. is an excellent choice. The 7mm-08 is also a great deer cartridge.
Looking at your current selection, you seem to be well covered with a few classic deer cartridges such as 243, 270, 30-30, and...
Another factor could be the present of the "dreaded donut" at the junction of the shoulder and neck. Brass that has been shot in rifles with larger chambers and then sized down will force brass into the shoulder/neck junction. This can significantly increase neck tension and release force...